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Finding the Fourth Proportional to 128,248.55, 192,372.87 and 33,478.46

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Solution

The fourth proportional to 128,248.55, 192,372.87 and 33,478.46 is: 50,217.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,248.55 : 192,372.87 = 33,478.46 : x
  2. Step 2: Convert to fraction form
    128,248.55/192,372.87 = 33,478.46/x
  3. Step 3: Cross multiply
    128,248.55x = 192,372.87 × 33,478.46
  4. Step 4: Simplify right side
    128,248.55x = 6,440,347,265.99
  5. Step 5: Solve for x
    x = 6,440,347,265.99/128,248.55
  6. Step 6: Final answer
    x = 50,217.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.